A wild update appears! HoustonTracker 2.20 features new effects and better speed control, and comes with ht2util, a savestate manager for importing tracks from older versions. Full list of changes is in the original post.

Awesome, especially the savestate manager. I will have to check out how to import my old track, but maybe I might be better off making a new song altogether. Glad to see this still updated and nice to see you again